frostfs-s3-gw/api/cache/buckets.go
Denis Kirillov 19b917e3b5 [#253] Caches refactoring
Signed-off-by: Denis Kirillov <denis@nspcc.ru>
2021-09-14 10:46:18 +03:00

56 lines
1.3 KiB
Go

package cache
import (
"time"
"github.com/bluele/gcache"
"github.com/nspcc-dev/neofs-s3-gw/api/data"
)
// BucketCache contains cache with objects and lifetime of cache entries.
type BucketCache struct {
cache gcache.Cache
}
const (
// DefaultBucketCacheSize is a default maximum number of entries in cache.
DefaultBucketCacheSize = 1e3
// DefaultBucketCacheLifetime is a default lifetime of entries in cache.
DefaultBucketCacheLifetime = time.Minute
)
// DefaultBucketConfig return new default cache expiration values.
func DefaultBucketConfig() *Config {
return &Config{Size: DefaultBucketCacheSize, Lifetime: DefaultBucketCacheLifetime}
}
// NewBucketCache creates an object of BucketCache.
func NewBucketCache(config *Config) *BucketCache {
gc := gcache.New(config.Size).LRU().Expiration(config.Lifetime).Build()
return &BucketCache{cache: gc}
}
// Get returns cached object.
func (o *BucketCache) Get(key string) *data.BucketInfo {
entry, err := o.cache.Get(key)
if err != nil {
return nil
}
result, ok := entry.(*data.BucketInfo)
if !ok {
return nil
}
return result
}
// Put puts an object to cache.
func (o *BucketCache) Put(bkt *data.BucketInfo) error {
return o.cache.Set(bkt.Name, bkt)
}
// Delete deletes an object from cache.
func (o *BucketCache) Delete(key string) bool {
return o.cache.Remove(key)
}